612055864 has 24 divisors (see below), whose sum is σ = 1334969640. Its totient is φ = 262309488.

The previous prime is 612055841. The next prime is 612055867. The reversal of 612055864 is 468550216.

It is a super-2 number, since 2×612055864² = 749224761313572992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612055867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 780292 + ... + 781075.

It is an arithmetic number, because the mean of its divisors is an integer number (55623735).

Almost surely, 2^612055864 is an apocalyptic number.

It is an amenable number.

612055864 is an abundant number, since it is smaller than the sum of its proper divisors (722913776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612055864 is a wasteful number, since it uses less digits than its factorization.

612055864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561387 (or 1561376 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 612055864 is about 24739.7628121209. The cubic root of 612055864 is about 849.0443071897.

The spelling of 612055864 in words is "six hundred twelve million, fifty-five thousand, eight hundred sixty-four".